CVE-2026-90864

Host Administrator Path Containment Bypass in Progress WS_FTP Server

State: Published
Severity: 9.1 Critical
Published: Oct 29, 2026
Updated: Oct 30, 2026
Reserved: Sep 14, 2026

Description

A path traversal vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow a delegated Host Administrator to access or modify files outside their authorized scope.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H	ProgressSoftware

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-434 Unrestricted Upload of File with Dangerous Type

Affected Products

Product	Versions
WS_FTP ServerProgress Software	before 2024.0.7Affected before 2025.0.4Affected

References

https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/viewvendor-advisory

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